Service And Adjustments - Poulan Pro PPB300 Instruction Manual

REPLACE SPARK PLUG
Replace the spark plug each year to ensure
the engine starts easier and runs better. Set
spark plug gap at 0.025 inch (0.6 mm). Igni-
tion timing is fixed and nonadjustable.

SERVICE AND ADJUSTMENTS

REPLACING THE LINE
1. Remove spool by firmly pulling on tap
button.
2. Clean entire surface of hub and spool.
3. Replace with a pre-wound spool, or cut two
lengths of 12-1/2 feet (3.8 meters) of 0.080!
(2 mm) diameter Poulan PROr brand line.
WARNING:
Never use wire, rope,
string, etc., which can break off and become a
dangerous missile.
4. Insert ends of the lines about 1/2 inch (1
cm) into the small holes on the inside of
spool.
Spool
Line exit holes Line in Notch
Line in Notch
Hub
5. Wind the line evenly and tightly onto the
spool. Wind in the direction of the arrows
found on the spool.
6. Push the lines into the notches, leaving 3
to 5 inches (7 - - 12 cm) unwound.
7. Insert the lines into the the exit holes in
the hub as shown in the illustration.
8. Align the notches with the line exit holes.
9. Push spool into hub until it snaps into
place.
10. Pull the lines extending outside of the hub
to release the lines from the notches.
BLADE REPLACEMENT
Refer to the ASSEMBLY section for blade re-
placement instructions and illustrations.
1. Twist, then pull off spark plug boot.
2. Remove spark plug from cylinder and
discard.
3. Replace with Champion RCJ-6Y spark
plug and tighten securely with a 3/4 inch
(19 mm) socket wrench.
4. Reinstall the spark plug boot.
CARBURETOR ADJUSTMENT
WARNING:
making idle speed adjustments. The trimmer
head, blade or any optional attachment will be
spinning during most of this procedure. Wear
your protective equipment and observe all safe-
ty precautions. After making adjustments, the
trimmer head, blade or any optional attachment
must not move/spin at idle speed.
The carburetor has been carefully set at the
factory. Adjustments may be necessary if you
notice any of the following conditions:
S Engine will not idle when the throttle is
released.
S The trimmer head, blade or optional
attachment moves/spins at idle.
Small
Make adjustments with the unit supported so
Holes
the cutting attachment is off the ground and
will not make contact with any object. Hold
the unit by hand while running and making ad-
justments. Keep all parts of your body away
from the cutting attachment and muffler.
Idle Speed Adjustment
Allow engine to idle. Adjust speed until engine
runs without trimmer head, blade or optional
attachment moving or spinning (idle too fast)
or stalling (idle speed too slow).
S Turn idle speed screw clockwise to
increase engine speed if engine stalls or
dies.
S Turn idle speed screw counterclockwise to
decrease engine speed if trimmer head,
blade or optional attachment moves or
spins at idle.
WARNING:
after each adjustment. The trimmer head,
blade or optional attachment must not move
or spin at idle speed to avoid serious injury to
the operator or others.
Air Filter
Cover
Idle Speed
Screw
If you require further assistance or are unsure
about performing this procedure, contact an
authorized service
1- -800- -554- -6723.
16
Keep others away when
Recheck the idle speed
dealer or call